1. American Evaluation Association. ( 2008). Guiding principles for evaluators. Retrieved January 10, 2008, from http://www.eval.org/Publications/GuidingPrinciples.asp.
2. , & ( 2001). The HR scorecard. Boston: Harvard Business School Press.
3. Using evaluation to build organizational performance and learning capability: A strategy and a method
4. , , , & ( 1999). Research in human performance technology. In & (Eds.), Handbook of human performance technology (2nd ed., pp. 895–915). San Francisco: Pfeiffer/Jossey-Bass.
5. , , , & ). Educational research: An introduction 8/E (7th ed.). Boston: Allyn & Bacon.